METHOD FOR CONTROLLING THE AUTOMATIC START/STOP SYSTEM OF THE THERMAL ENGINE OF A VEHICLE, CORRESPONDING SYSTEM AND USE THEREOF

• US 20100094512A1
• Filed: 02/01/2008
• Published: 04/15/2010
• Est. Priority Date: 02/07/2007
• Status: Active Grant

• Current Assignee: Valeo Equipements Electriques Moteur (Valeo SE)
• Original Assignee: Valeo Equipements Electriques Moteur (Valeo SE)
• Inventors: Corniglion, Cyrille, Taspinar, Ertugrul
• Granted Patent: US 8,224,531 B2
• Time in Patent Office: Days
• US Class Current: 701/48
• CPC Class Codes: B60T 7/12 for automatic initiation; for initiation not subject to will of driver or passenger limiting speed of vehicles other than rail vehicles B60K31/00
• CPC Class Codes: F02D 2041/1411 using a finite or infinite state machine, automaton or state graph for controlling or modelling
• CPC Class Codes: F02D 2200/501 Vehicle speed
• CPC Class Codes: F02N 11/0833 Vehicle conditions F02N11/0822, F02N11/0825 take precedence
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A method implemented in a vehicle, using information representative of an operational state of the vehicle being provided by sensors and a data communication bus. The information is representative of the engagement and disengagement of an exploitation assistance brake (EAB) and a speed of the vehicle and of a pressure on a brake pedal of the vehicle. A cut-off condition (C3) for the thermal engine can be validated when the speed is lower than a predetermined threshold and in the case where pressure is applied on the brake pedal or when the exploitation assistance brake is activated. The system includes at least one sensor for the condition of the exploitation assistance brake.

Claims

1. Method for controlling an automatic start/stop system of a thermal engine of a vehicle comprising information representative of an operational state of said vehicle, being provided by sensors and a data communication bus, said information being representative of the activation or deactivation of an exploitation assistance brake (EAB), of a speed of said vehicle and of a pressure on or a release of a brake pedal of said vehicle, wherein a condition for activating the start (C6, C7) of said thermal engine is validated in the case of releasing said brake pedal and deactivating said exploitation assistance brake, or in the case of deactivating said exploitation assistance brake.

2. Method for controlling an automatic start/stop system of a thermal engine of a vehicle according to claim 1, wherein a cut-off condition (C3) for said thermal engine is validated when said speed is lower than a predetermined threshold, and in the case where pressure is applied on said brake pedal or when said exploitation assistance brake is activated.

3. Method for controlling an automatic start/stop system of a thermal engine of a vehicle according to claim 1, wherein said information is further representative of a rotational speed of said engine, and of a cut-off of said engine.

4. Method for controlling an automatic start/stop system of a thermal engine of a vehicle according to claim 3, wherein a stop condition (C4) for said engine is validated during said cut-off of said engine and when said rotational speed is zero.

5. Method for controlling an automatic start/stop system of a thermal engine of a vehicle according to claim 3, wherein a vehicle start condition (C5) is validated when said rotational speed is equal to a pre-determined idling speed.

6. Automatic start/stop system of a thermal engine of a vehicle according to claim 1, comprising at least one sensor for the state of said exploitation assistance brake.

7. Use of the method according to claim 1 in an automatic start/stop system of a thermal engine of a vehicle according to claim 1, comprising at least one sensor for the state of said exploitation assistance brake, onboard a passenger transport vehicle.